That doesn't really tell much does it?
Yes, and no. While there isn't much "up front" we can learn some important things by what ISN'T there.
The simple fact that the person or org that runs SWARM is hiding their identity is indicative of their fundamentally dishonest nature. They claim that they are doing it because they fear violent retribution, but then they turn around and slander those who oppose illegal immigration by constantly calling them violent and promoters of violence.
This is no less than agit-prop; slanderous labelling INTENTIONALLY published to cause or to give rationale for the reactionary violence against their political opponents. Further, it is so transparent that this is the case, that it renders the disclaimer they post on their website completely useless. The disclaimer says one thing and the content they post obviously intends the opposite.
They've got to be interdicted before they get someone hurt or killed.
Any Legal Eagles in the house want to endure the self-abuse of reading the content at swarmtheminutemen.com to see if there's anything there that could be legally actionable?